Just start took car out for a spin and notice it would not accelerate like it should
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2000 Jaguar Vanden Plas Question: will not accelerate when step on gas
Answer #1patrick mannion from Greg Solow's Engine Room, March 18, 2011, 16:25Master
It could be many things, unfortunately and without experiencing the problem first hand or being able to do some basic diagnostic tests its hard to say. It could be a failing fuel pump, a restricted catalytic converter, a failing transmission, basic tests need to be done to get to the root of the problem. Is the Check Engine Light on?
Answer #2Mclovin36 April 07, 2012, 10:16Rookie
This could be a possibility, it could be a OXYGEN SENSOR, with regulates how much throttle that gets delivered to the motor through the computer system. So for example, u can be going 30 mph when u are really going 10 mph. Hope this helps.